static const uint8_t sync_header[12] = {0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x00};
-static int str_probe(AVProbeData *p)
+static int str_probe(const AVProbeData *p)
{
const uint8_t *sector= p->buf;
const uint8_t *end= sector + p->buf_size;